The weapons used in the shooting include a hunting gun and a historical army rifle known as a carbine, which dates back to the first half of the 20th Century, general prosecutor Catherine Sappey said.
Capt Gary Palmer, an Army weapons expert, investigated the shooting in parallel with the police to ensure later recruits trained safely.
In Los Angeles this week, officials moved up their annual Mother's Day buyback program due to the Sandy Hook shooting, netting more than 2, 000 weapons, including two rocket launchers.
CNN: Donors spawn Connecticut gun buyback after mass shooting
Unease about firearms in the aftermath of the Sandy Hook shooting has led investors to explore selling stakes in weapons companies.
FORBES: One Small Defense Contractor Certainly Isn't Afraid Of Making More Guns
The three weapons found at the scene of the shooting were legally purchased by his mother, a law enforcement official familiar with the investigation told CNN.
An Army weapons expert said safety failures meant a gunner shooting at a target was not firing out to sea.
Now that so many Americans carry weapons when they go out of the home, shooting incidents can occur anywhere, including very commonly the road.
On Monday, prominent Mexican peace activists renewed their call for the United States to stop weapons trafficking across the border, saying that the Connecticut shooting made the need for action all the more clear.
Lane pleaded guilty last month to three counts of aggravated murder, two counts of attempted aggravated murder and weapons-related charges in the February 27, 2012, shooting at Chardon High School in northeastern Ohio.
The father of a boy slain in a mass school shooting in December has broken down in tears at a US Senate hearing on a proposed assault weapons ban.
BBC: Father of slain Newtown child weeps at Senate gun hearing
Mistakes like the American shooting-down of an Iranian airliner in 1988 become a lot more dangerous in a crisis where there are nuclear weapons armed and ready.
应用推荐